Numerical study of the effect of individual racks in lenses on the operation of nonlinear lenticular membrane-pneumatic systems by the step method

Objective . The purpose of this study is to substantiate the methodology for static calculation light coatings large-span structures with lenticular membrane-pneumatic lenses, including racks at individual points span, using step-iterative method parameter increments. Method involves phased application finite element (FEM), universal equation state gas and improved Euler-Cauchy numerical procedure, taking into account geometric nonlinearity systems physical elastic work air in lenses aftereffect excess pressure. Result A comparison made terms rigidity load-bearing capacity reinforced posts, corresponding flexible classical type. Conclusion In presence racks, effect a significant increase bearing observed large spans. distance between posts along building can be adjusted during design thereby regulate strengthening system. maximum deflections lenticular-shaped system struts are much less than type under action calculated snow load first second limit states.